creaser

noun

creas·​er

ˈkrē-sər

plural -s

: one that creases: such as

a

: a tool or a sewing-machine attachment for making lines or creases on leather or cloth as guides to sew by

b

: a tool for making creases or beads (as in sheet iron)

c

: a tool for making the band impression distinct on the backbones of books or for making blind lines or creases on the cases of books

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